12806870771 has 2 divisors, whose sum is σ = 12806870772. Its totient is φ = 12806870770.

The previous prime is 12806870759. The next prime is 12806870773. The reversal of 12806870771 is 17707860821.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12806870771 is a prime.

Together with 12806870773, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12806870773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6403435385 + 6403435386.

It is an arithmetic number, because the mean of its divisors is an integer number (6403435386).

Almost surely, 2^12806870771 is an apocalyptic number.

12806870771 is a deficient number, since it is larger than the sum of its proper divisors (1).

12806870771 is an equidigital number, since it uses as much as digits as its factorization.

12806870771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 263424, while the sum is 47.

The spelling of 12806870771 in words is "twelve billion, eight hundred six million, eight hundred seventy thousand, seven hundred seventy-one".